Blue Mountains Municipality (Katoomba)
September
Weather in Blue Mountains Municipality for September 2025
Your guide to Blue Mountains Municipality weather in September - trends and predictions
Until now, September 2025 in Blue Mountains Municipality is slightly cooler than the historical average by -0.7 °C.
The forecast for the upcoming days in Blue Mountains Municipality predicts a temperature of 21.6 °C, which is slightly above the historical average.
In general, the average temperature in Blue Mountains Municipality at the beginning of September is 19 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 20.7 °C by the end of September.
Blue Mountains Municipality experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 54 mm.
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Temperatures
Rain 🌧️
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22
Dry days
8
Rainy days
0
Snow days
19°/4°
Temperatures
14 km/h
Avg max wind
61 %
Avg humidity
Blue Mountains Municipality Weather September
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Temperatures trend during September in Blue Mountains Municipality
See the weather trend as well as the moving average line
September weather in Blue Mountains Municipality day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Overcast | 19° /-1° | 0 mm | 5 | |
| 2 Sept. |  Fog | 18° /0° | 0 mm | 5 | |
| 3 Sept. |  Partly cloudy | 18° /0° | 0 mm | 6 | |
| 4 Sept. |  Sunny | 19° /5° | 0 mm | 6 | |
| 5 Sept. | Overcast | 18° /3° | 0 mm | 5 | |
| 6 Sept. |  Patchy rain possible | 17° /7° | 0 mm | 5 | |
| 7 Sept. | Partly cloudy | 24° /8° | 0 mm | 7 | |
| 8 Sept. | Patchy rain possible | 23° /13° | 0 mm | 6 | |
| 9 Sept. | Overcast | 19° /8° | 3.5 mm | 5 | |
| 10 Sept. | Sunny | 18° /2° | 18 mm | 6 | |
| 11 Sept. | Partly cloudy | 18° /3° | 2.3 mm | 6 | |
| 12 Sept. |  Moderate or heavy rain shower | 17° /2° | 6.7 mm | 5 | |
| 13 Sept. | Partly cloudy | 16° /0° | 0 mm | 6 | |
| 14 Sept. | Sunny | 21° /6° | 0 mm | 1.5 | |
| 15 Sept. | Sunny | 22° /7° | 0 mm | 1.6 | |
| 16 Sept. | Patchy rain possible | 25° /13° | 1 mm | 1.4 | |
| 17 Sept. | Patchy rain possible | 21° /3° | 0.3 mm | 1.6 | |
| 18 Sept. | Sunny | 23° /2° | 0 mm | 1.7 | |
| 19 Sept. | Patchy rain possible | 27° /6° | 1.1 mm | 4 | |
| 20 Sept. | Sunny | 19° /6° | 0 mm | 5 | |
| 21 Sept. | Partly cloudy | 14° /2° | 0.1 mm | 4 | |
| 22 Sept. | Sunny | 19° /-3° | 0 mm | 4 | |
| 23 Sept. | Sunny | 21° /-1° | 0 mm | 4 | |
| 24 Sept. | Sunny | 21° /2° | 0 mm | 5 | |
| 25 Sept. | Sunny | 21° /5° | 0 mm | 5 | |
| 26 Sept. | Partly cloudy | 23° /6° | 0 mm | 5 | |
| 27 Sept. | Sunny | 26° /9° | 0 mm | 6 | |
| 28 Sept. | Patchy rain possible | 14° /6° | 1 mm | 4 | |
| 29 Sept. | Patchy rain possible | 20° /6° | 0.9 mm | 6 | |
| 30 Sept. | Light rain shower | 20° /4° | 5.8 mm | 6 | |
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Important Notice
Our weather forecast for Blue Mountains Municipality in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Blue Mountains Municipality forecast closer to your planned date for the most up-to-date weather information.
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Blue Mountains Municipality in September - FAQ
What are the expected maximum and minimum temperatures in Blue Mountains Municipality during September?
During September, expect a variety of temperatures with highs around 19° and lows near 4°, suitable for diverse activities and preferences.
How much rainfall should be expected in Blue Mountains Municipality during September?
Moderate rainfall is anticipated in Blue Mountains Municipality during September, with a total of 54 mm spread over approximately 8 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Blue Mountains Municipality during September?
The average wind speed in Blue Mountains Municipality during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Blue Mountains Municipality
Explore the daily rainfall trends and prepare for Blue Mountains Municipalitys September weather 💧
UV exposure in Blue Mountains Municipality during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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